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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5746) add ShortCircuitSharedMemorySegment
Date Wed, 29 Jan 2014 20:58:10 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5746?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Colin Patrick McCabe updated HDFS-5746:
---------------------------------------

    Attachment: HDFS-5746.005.patch

* rename 'anchor' and 'unanchor' to 'addAnchor' and 'removeAnchor'

* add a stress test for DomainSocketWatcher, which also includes some remove operations.

* make some messages TRACE that were formerly INFO.  we don't want info logs when handling
every event

* fix a bug in the native code where we were reallocating the fd_set_data structure, but writing
the new length to the old structure

* put addNotificationSocket in a new function to avoid cluttering the main loop.  Remember
to increment the reference count on the notificationSocket so that we don't get logs about
mismatched reference counts when shutting down the watcher

> add ShortCircuitSharedMemorySegment
> -----------------------------------
>
>                 Key: HDFS-5746
>                 URL: https://issues.apache.org/jira/browse/HDFS-5746
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, hdfs-client
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>             Fix For: 3.0.0
>
>         Attachments: HDFS-5746.001.patch, HDFS-5746.002.patch, HDFS-5746.003.patch, HDFS-5746.004.patch,
HDFS-5746.005.patch
>
>
> Add ShortCircuitSharedMemorySegment, which will be used to communicate information between
the datanode and the client about whether a replica is mlocked.



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